Tin pyrophosphate has been employed as a proton conductor in polymer electrolyte membranes (PEMs) at temperatures over 200 ℃. However, neither the aggregation of the SnP2O7 nanoparticles nor the proton conduction mechanism of the material has been clearly clarified in PEM. The present work reports a polybenzimidazole (PBI)/SnP2O7 composite membrane with homogeneous distribution of the inorganic phase

In this study, we present a novel multiscale electrochemo-mechanical model for porous electrodes in lithium-ion batteries (LIBs). Building upon the theory of finite deformation and the pseudo-two-dimensional framework introduced by Doyle et al. (Journal of the Electrochemical Society, 140, 6(1993)), our model incorporates the interaction between particle deformation and multiscale electrochemical processes

Lithium-sulfur (Li-S) batteries receive considerable attention for their high energy density, but their slow reaction kinetics and poor shuttle effects raise concerns. Here, synthesized V2O3 spheres were used as substrate templates, and ZIF-67 particles were grown on the surface of V2O3 by in-situ growth method. ZIF-67 was calcined at high temperature to form N-doped porous carbon attached to the surface

Transition metal hydroxides have attracted wide attention as promising composite nanomaterials due to their numerous active sites and large specific surface areas. In this study, a two-step hydrothermal synthesis method is proposed to generate a heterostructure (NiCoZn-LDH@NiMoO4@NF) consisting of nanoflowers coated with nanoneedles on a foam nickel substrate. The aggregation issue of NiCoZn-LDH is

Reaction rate distribution and current density distribution of Li-ion batteries largely determine the local aging and heat generation. Homogenous distribution contributes to better durability and safety of Li-ion batteries. This paper focuses on modeling the in-plane distribution of electrochemical reaction current, and the general equation relating space derivatives of the overvoltage to the electrochemical

Practical sodium/potassium-ion batteries require carbon anodes with both high gravimetric and volumetric performances, for which engineering carbon material with simultaneous high-density architecture and well-organized structures is the key. Herein, a simple and scalable strategy via a mechanochemistry process is developed to transform high-surface-area activated carbon into densified carbon with

The effect of B-site doping in perovskite-structure lanthanum strontium chromite La0.75Sr0.25CrO3-δ (LSCr) with 10 at. % (La0.75Sr0.25Cr0.9Fe0.1O3-δ, LSCrF0.1) and 50 at. % (La0.75Sr0.25Cr0.5Fe0.5O3-δ, LSCrF0.5) Fe in B (Cr) sublattice was studied with emphasis on the electronic conductivity under various gas compositions and the electrochemical activity of the materials as fuel electrodes in Solid

The aqueous Zinc-ion cells have drawn tremendous attention in the electrochemical energy storage market because of their merits of high safety, environmentally friendly and low cost. However, the high activity of aqueous electrolytes leads to the formation of by-products and the growth of unfavorable dendrites, which seriously reduces the cycling stability of the cell. Herein, an electrolyte additive

Analysis of neurotransmitters such as dopamine (DA) is essential to better understand brain-related mechanisms. In this context, paper-based electroanalytical devices are promising alternatives to the current techniques for affordable, user-friendly molecular quantitation. Conductive carbon-based and polymer-based inks such as carbon nanotubes (CNT) and polymer poly(3,4-ethylenedioxythiophene): poly(styrene

Extensive research has investigated the redox behavior of Sm(III)/Sm(II) in the NaF-BeF2 melt for corrosion control. Results shows a quasi-reversible process with diffusion-controlled mass transfer. The concentration ratio of the couple is stable and controllable. The corrosion inhibition performance of the Sm(III)/Sm(II) couple is evaluated for 316H stainless steel and GH3535 superalloy, showing effective

Porous Germanium (PGe) has emerged as a promising material for applications such as substrate engineering, sensing, and energy storage, thanks to its uniquely versatile and tunable properties. The bipolar electrochemical etching (BEE) method is widely regarded as the go-to approach for producing high-quality PGe layers. However, the lack of profound understanding of BEE process limits its use to a

Previously, our group has established an electrochemiluminescence (ECL) molecular imaging method to detect carcinoembryonic antigen (CEA) at single tissue sections of carcinoma patients. However, the tissue fixation blocks the binding sites of surface antigens affecting the antigen-antibody interaction and the resultant visualization sensitivity. Herein, we report an antigen retrieval assisted ECL

To improve the industrial applicability of aqueous organic redox flow batteries (AORFB), inexpensive redox compounds highly soluble in aqueous medium and stable during cycling are required. Thus, a water-soluble quinizarin derivative, 1,4-dihydroxy-2-carboxymethyl-9,10-anthraquinone (1,4-CDHAQ) prepared by a one-pot synthesis from relatively low-cost leucoquinizarin (widely used as intermediate in

The construction of an anode material with high electrical conductivity and long cycle stability was essential for the practical application of Sodium-ion batteries (SIBs). Hollow Ti3C2@TiSe2 composites were successfully synthesized using in situ selenization methods from MXene-derived materials. The composites obtained in this study exhibited an impressive reversible capacity, attaining a specific

With the application of lithium-ion battery (LIB) in the field of electric aircraft, the aging behavior and mechanism of LIB under low-pressure environment have become an important topic. In this paper, the aging characteristics of LiCoO2/graphite cells under low pressure are investigated. The results show that the decrease of pressure leads to the degradation of cell capacity. With the pressure decreases

In-situ electrochemical measurement was used to investigate the fretting corrosion synergistic damage mechanism of Inconel 690 alloy in the solution with different dissolved oxygen (DO) concentrations. The synergistic mechanism of fretting corrosion was quantified. Results show that the minimum fretting corrosion damage of Inconel 690 was obtained at DO concentration of 2 ppm and the corrosion-accelerated

This research focuses on the identification and quantification of lithium-ion battery degradation indicators at low temperatures. We studied the cycling aging of 18650 commercial NMC lithium-ion batteries at 10°C. For this purpose, we carried out life cycle tests and performed Galvanostatic Intermittent Titration Technique (GITT) tests in the voltage range for the charge and discharge processes for

Transition-metal selenides, especially cobalt selenides (CoSe), are widely regarded as a promising anode for potassium-ion batteries (KIBs) due to their high theoretical capacity and good electrical conductivity. However, CoSe easily suffers from a substantial volume change upon repeated cycling, leading to a fast capacity decay and poor cycling stability. Herein, a dual-carbon confined CoSe is successfully

Slurryless electrochemical mechanical polishing (ECMP) is a promising polishing method for SiC wafers. To achieve a high polishing efficiency, low surface roughness, low cost, and low environmental load, the effects of the electrolyte type and concentration on the anodic oxidation and ECMP of the 4H-SiC (0001) surface were investigated. It is confirmed that the anodic oxidation rate is mainly affected

Abstract not available

We present a theoretical analysis of the vibrational contributions to the equilibrium voltage for Li-MOF and Na-MOF electrochemical cells. Our analysis relies on DFT calculations and ab-initio molecular dynamics. We explore factors that affect these vibrational contributions to the electrochemical potential, such as the mass of alkali ions and temperature dependency. We show that substituting Li with

Under the same initial noise covariance, the extended Kalman filter (EKF) algorithm and the adaptive extended Kalman filter (AEKF) algorithm show different convergence rates in the battery state estimation experiments. It can be concluded from the experimental results that the convergence rate of the EKF algorithm is usually faster than that of the AEKF algorithm, but the estimation accuracy of the

The bionic features offered by memory device are being actively explored. However, two-terminal memristors exhibit variability and limited capacity due to their inherent single presynaptic input scheme. Compared with the two-terminal memristor, the memtransistor can realize the modulation of conductive channel through the synergistic effect of gate, which enables the multifunctional modulation. Here